Improvement in loom-picking mechanisms



A. STUCKWELL.

`Lonfm Picking-Machines.

Patented March11,1873.

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rUNITED STATES PATENT OFFICE.

ALBERT STOCKWELL, OF WOONSOCKET, RHODE ISLAND.

IMPROVEMENT lhl LOOM-PICKING MECHANISMS.

Specification forming part of Letters Patent No.1 36,786, dated March11,1873.

To all whom it may concern:

Beit known that I, ALBERT SToCKwELL, of Woonsocket, in the county ofProvidence and State of Rhode Island, have invented a new and valuableImprovement in Looms; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawing making a part ofthis specication and to the letters andI figures of reference markedthereon.

Figure l of the drawing is a representation of a front eleva-tion of myinvention. Fig. 2 is a cross-section of my invention.

This invention has relation to means for operating Jthe picker-stick inloom mechanism, as hereinafter set forth.

In the accompanying drawing', the letter A designates the frame-work ofa loom; B, the lower shaft with its gear-wheel ai; C, the upper shaftwith its cranks b b and gear-wheel c. Power is applied to this shaft atd. D represents the race with its standards d and rock-shaft e. Erepresents one of the pickersticks. To the inner face of each standardel is pivoted a short rock-shaft, a', carrying at one end an arm,y l1',and at the other a seg- To the arm b is attached the pickerstrap d,which may be made sufficiently stiff `to return the stick to itsoriginal position after the stroke. To the lower end of the segment issecured a band, f, connecting the latter with the bent lever F, which ispivoted to the sliding barry, which works in the bearing h attached tothe loom-frame. To the end of the upper or curved arm of the lever F ispivoted an anti-friction roller, k, opposite the crankjoint .connectionbetween the upper shaft and the arin l of the race. This arm is providedat its end with a toe or bunter, z, which, at every second revolution ofthe shaft, comes in contact with the roller lr, and operates thelpicker-stick through the bent lever F. To the lower end of the slide gis attached an arm, h', for engagement with a cam, fv, on the lowershaft, designed to lift the slide, and the bent lever F at every secondrevolution of the upper shaft, thus raising the anti-friction roller 7cat such times suiciently to clear the bunter z. Thus the bunter isarranged to strike said roller at every second revolution, the shuttlebeing returned at every alternate revolution vof the shaft through themedium of similar mechanism in connection with the picker-stick at theother end of the race. G represents a large cam secured to the lowershaft under the bent lever F, and designed to hold said lever up tothefront or inner end of the shuttle-box during the return of the shuttlein order to prevent the operative from introducing two shuttles into theloom at the same time.

The advantages of the mechanism described may be stated as followsf I amenabled to applypower to the crankshaft instead of the lower shaft, andthus to avoid undue wear of the gearing. A degree of durability hithertounattained is thought to be secured,'and th loom is rendered capable ofbeing run at increased speed.

In the arrangement described the lower shaft will only operate theharness and rilling-cams.

What I claim as new is- 1. The combination, with the bunter z and bentlever F, of the slide g and cam o, substantially as specified.

2. The combination, with the bunter z and picking-lever F, of theholding-cam G, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

ALBERT STOGKWELL.

v Witnesses:

EDWIN ALDEICH,

WILLIAM H. JENcKEs.

